The King Copper F-150
#12
King Copper "05 KR"
Thread Starter
Join Date: Jun 2011
Location: Plano, Texas & Annapolis, MD
Posts: 187
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No plans of re-gearing
#16
Its what i plan to do to mine when i get my wheels and lift and all that jazz. Red center caps and red spike lug nut covers. Looks mean sitting still and looks mean rolling.
#17
Senior Member
Think of all that added stress you are putting on the engine and transmission from all the extra rottating mass. They both have to work twice as hard now because you are running almost 35" tires compared to your stock 32" tires that came with the vehicle. A 3.55 or 3.73 aren't meant to rotate that amount of tire, so the engine and transmission have to make up for the higher gearing. Once you lower the gearing to a 4.10 or 4.56 you won't have this problem any longer. The first couple of things you should have noticed by now is your truck feels much slower, and you that your MPGs have suffered greatly.
Last edited by BolletuH; 08-22-2011 at 03:01 AM.